| /****************************************************************************** |
| * |
| * This file is provided under a dual BSD/GPLv2 license. When using or |
| * redistributing this file, you may do so under either license. |
| * |
| * GPL LICENSE SUMMARY |
| * |
| * Copyright(c) 2008 - 2010 Intel Corporation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, |
| * USA |
| * |
| * The full GNU General Public License is included in this distribution |
| * in the file called LICENSE.GPL. |
| * |
| * Contact Information: |
| * Intel Linux Wireless <ilw@linux.intel.com> |
| * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| * |
| * BSD LICENSE |
| * |
| * Copyright(c) 2005 - 2010 Intel Corporation. All rights reserved. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name Intel Corporation nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| *****************************************************************************/ |
| |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/slab.h> |
| #include <linux/init.h> |
| |
| #include <net/mac80211.h> |
| |
| #include "iwl-commands.h" |
| #include "iwl-dev.h" |
| #include "iwl-core.h" |
| #include "iwl-debug.h" |
| #include "iwl-agn.h" |
| #include "iwl-io.h" |
| |
| /************************** EEPROM BANDS **************************** |
| * |
| * The iwl_eeprom_band definitions below provide the mapping from the |
| * EEPROM contents to the specific channel number supported for each |
| * band. |
| * |
| * For example, iwl_priv->eeprom.band_3_channels[4] from the band_3 |
| * definition below maps to physical channel 42 in the 5.2GHz spectrum. |
| * The specific geography and calibration information for that channel |
| * is contained in the eeprom map itself. |
| * |
| * During init, we copy the eeprom information and channel map |
| * information into priv->channel_info_24/52 and priv->channel_map_24/52 |
| * |
| * channel_map_24/52 provides the index in the channel_info array for a |
| * given channel. We have to have two separate maps as there is channel |
| * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and |
| * band_2 |
| * |
| * A value of 0xff stored in the channel_map indicates that the channel |
| * is not supported by the hardware at all. |
| * |
| * A value of 0xfe in the channel_map indicates that the channel is not |
| * valid for Tx with the current hardware. This means that |
| * while the system can tune and receive on a given channel, it may not |
| * be able to associate or transmit any frames on that |
| * channel. There is no corresponding channel information for that |
| * entry. |
| * |
| *********************************************************************/ |
| |
| /** |
| * struct iwl_txpwr_section: eeprom section information |
| * @offset: indirect address into eeprom image |
| * @count: number of "struct iwl_eeprom_enhanced_txpwr" in this section |
| * @band: band type for the section |
| * @is_common - true: common section, false: channel section |
| * @is_cck - true: cck section, false: not cck section |
| * @is_ht_40 - true: all channel in the section are HT40 channel, |
| * false: legacy or HT 20 MHz |
| * ignore if it is common section |
| * @iwl_eeprom_section_channel: channel array in the section, |
| * ignore if common section |
| */ |
| struct iwl_txpwr_section { |
| u32 offset; |
| u8 count; |
| enum ieee80211_band band; |
| bool is_common; |
| bool is_cck; |
| bool is_ht40; |
| u8 iwl_eeprom_section_channel[EEPROM_MAX_TXPOWER_SECTION_ELEMENTS]; |
| }; |
| |
| /** |
| * section 1 - 3 are regulatory tx power apply to all channels based on |
| * modulation: CCK, OFDM |
| * Band: 2.4GHz, 5.2GHz |
| * section 4 - 10 are regulatory tx power apply to specified channels |
| * For example: |
| * 1L - Channel 1 Legacy |
| * 1HT - Channel 1 HT |
| * (1,+1) - Channel 1 HT40 "_above_" |
| * |
| * Section 1: all CCK channels |
| * Section 2: all 2.4 GHz OFDM (Legacy, HT and HT40) channels |
| * Section 3: all 5.2 GHz OFDM (Legacy, HT and HT40) channels |
| * Section 4: 2.4 GHz 20MHz channels: 1L, 1HT, 2L, 2HT, 10L, 10HT, 11L, 11HT |
| * Section 5: 2.4 GHz 40MHz channels: (1,+1) (2,+1) (6,+1) (7,+1) (9,+1) |
| * Section 6: 5.2 GHz 20MHz channels: 36L, 64L, 100L, 36HT, 64HT, 100HT |
| * Section 7: 5.2 GHz 40MHz channels: (36,+1) (60,+1) (100,+1) |
| * Section 8: 2.4 GHz channel: 13L, 13HT |
| * Section 9: 2.4 GHz channel: 140L, 140HT |
| * Section 10: 2.4 GHz 40MHz channels: (132,+1) (44,+1) |
| * |
| */ |
| static const struct iwl_txpwr_section enhinfo[] = { |
| { EEPROM_LB_CCK_20_COMMON, 1, IEEE80211_BAND_2GHZ, true, true, false }, |
| { EEPROM_LB_OFDM_COMMON, 3, IEEE80211_BAND_2GHZ, true, false, false }, |
| { EEPROM_HB_OFDM_COMMON, 3, IEEE80211_BAND_5GHZ, true, false, false }, |
| { EEPROM_LB_OFDM_20_BAND, 8, IEEE80211_BAND_2GHZ, |
| false, false, false, |
| {1, 1, 2, 2, 10, 10, 11, 11 } }, |
| { EEPROM_LB_OFDM_HT40_BAND, 5, IEEE80211_BAND_2GHZ, |
| false, false, true, |
| { 1, 2, 6, 7, 9 } }, |
| { EEPROM_HB_OFDM_20_BAND, 6, IEEE80211_BAND_5GHZ, |
| false, false, false, |
| { 36, 64, 100, 36, 64, 100 } }, |
| { EEPROM_HB_OFDM_HT40_BAND, 3, IEEE80211_BAND_5GHZ, |
| false, false, true, |
| { 36, 60, 100 } }, |
| { EEPROM_LB_OFDM_20_CHANNEL_13, 2, IEEE80211_BAND_2GHZ, |
| false, false, false, |
| { 13, 13 } }, |
| { EEPROM_HB_OFDM_20_CHANNEL_140, 2, IEEE80211_BAND_5GHZ, |
| false, false, false, |
| { 140, 140 } }, |
| { EEPROM_HB_OFDM_HT40_BAND_1, 2, IEEE80211_BAND_5GHZ, |
| false, false, true, |
| { 132, 44 } }, |
| }; |
| |
| /****************************************************************************** |
| * |
| * EEPROM related functions |
| * |
| ******************************************************************************/ |
| |
| /* |
| * The device's EEPROM semaphore prevents conflicts between driver and uCode |
| * when accessing the EEPROM; each access is a series of pulses to/from the |
| * EEPROM chip, not a single event, so even reads could conflict if they |
| * weren't arbitrated by the semaphore. |
| */ |
| int iwlcore_eeprom_acquire_semaphore(struct iwl_priv *priv) |
| { |
| u16 count; |
| int ret; |
| |
| for (count = 0; count < EEPROM_SEM_RETRY_LIMIT; count++) { |
| /* Request semaphore */ |
| iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
| CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM); |
| |
| /* See if we got it */ |
| ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG, |
| CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM, |
| CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM, |
| EEPROM_SEM_TIMEOUT); |
| if (ret >= 0) { |
| IWL_DEBUG_IO(priv, |
| "Acquired semaphore after %d tries.\n", |
| count+1); |
| return ret; |
| } |
| } |
| |
| return ret; |
| } |
| |
| void iwlcore_eeprom_release_semaphore(struct iwl_priv *priv) |
| { |
| iwl_clear_bit(priv, CSR_HW_IF_CONFIG_REG, |
| CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM); |
| |
| } |
| |
| int iwl_eeprom_check_version(struct iwl_priv *priv) |
| { |
| u16 eeprom_ver; |
| u16 calib_ver; |
| |
| eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION); |
| calib_ver = priv->cfg->ops->lib->eeprom_ops.calib_version(priv); |
| |
| if (eeprom_ver < priv->cfg->eeprom_ver || |
| calib_ver < priv->cfg->eeprom_calib_ver) |
| goto err; |
| |
| IWL_INFO(priv, "device EEPROM VER=0x%x, CALIB=0x%x\n", |
| eeprom_ver, calib_ver); |
| |
| return 0; |
| err: |
| IWL_ERR(priv, "Unsupported (too old) EEPROM VER=0x%x < 0x%x " |
| "CALIB=0x%x < 0x%x\n", |
| eeprom_ver, priv->cfg->eeprom_ver, |
| calib_ver, priv->cfg->eeprom_calib_ver); |
| return -EINVAL; |
| |
| } |
| |
| int iwl_eeprom_check_sku(struct iwl_priv *priv) |
| { |
| u16 eeprom_sku; |
| u16 radio_cfg; |
| |
| eeprom_sku = iwl_eeprom_query16(priv, EEPROM_SKU_CAP); |
| |
| priv->cfg->sku = ((eeprom_sku & EEPROM_SKU_CAP_BAND_SELECTION) >> |
| EEPROM_SKU_CAP_BAND_POS); |
| if (eeprom_sku & EEPROM_SKU_CAP_11N_ENABLE) |
| priv->cfg->sku |= IWL_SKU_N; |
| |
| if (!priv->cfg->sku) { |
| IWL_ERR(priv, "Invalid device sku\n"); |
| return -EINVAL; |
| } |
| |
| IWL_INFO(priv, "Device SKU: 0X%x\n", priv->cfg->sku); |
| |
| if (!priv->cfg->valid_tx_ant && !priv->cfg->valid_rx_ant) { |
| /* not using .cfg overwrite */ |
| radio_cfg = iwl_eeprom_query16(priv, EEPROM_RADIO_CONFIG); |
| priv->cfg->valid_tx_ant = EEPROM_RF_CFG_TX_ANT_MSK(radio_cfg); |
| priv->cfg->valid_rx_ant = EEPROM_RF_CFG_TX_ANT_MSK(radio_cfg); |
| if (!priv->cfg->valid_tx_ant || !priv->cfg->valid_rx_ant) { |
| IWL_ERR(priv, "Invalid chain (0X%x, 0X%x)\n", |
| priv->cfg->valid_tx_ant, |
| priv->cfg->valid_rx_ant); |
| return -EINVAL; |
| } |
| IWL_INFO(priv, "Valid Tx ant: 0X%x, Valid Rx ant: 0X%x\n", |
| priv->cfg->valid_tx_ant, priv->cfg->valid_rx_ant); |
| } |
| /* |
| * for some special cases, |
| * EEPROM did not reflect the correct antenna setting |
| * so overwrite the valid tx/rx antenna from .cfg |
| */ |
| return 0; |
| } |
| |
| void iwl_eeprom_get_mac(const struct iwl_priv *priv, u8 *mac) |
| { |
| const u8 *addr = priv->cfg->ops->lib->eeprom_ops.query_addr(priv, |
| EEPROM_MAC_ADDRESS); |
| memcpy(mac, addr, ETH_ALEN); |
| } |
| |
| /** |
| * iwl_get_max_txpower_avg - get the highest tx power from all chains. |
| * find the highest tx power from all chains for the channel |
| */ |
| static s8 iwl_get_max_txpower_avg(struct iwl_priv *priv, |
| struct iwl_eeprom_enhanced_txpwr *enhanced_txpower, |
| int element, s8 *max_txpower_in_half_dbm) |
| { |
| s8 max_txpower_avg = 0; /* (dBm) */ |
| |
| IWL_DEBUG_INFO(priv, "%d - " |
| "chain_a: %d dB chain_b: %d dB " |
| "chain_c: %d dB mimo2: %d dB mimo3: %d dB\n", |
| element, |
| enhanced_txpower[element].chain_a_max >> 1, |
| enhanced_txpower[element].chain_b_max >> 1, |
| enhanced_txpower[element].chain_c_max >> 1, |
| enhanced_txpower[element].mimo2_max >> 1, |
| enhanced_txpower[element].mimo3_max >> 1); |
| /* Take the highest tx power from any valid chains */ |
| if ((priv->cfg->valid_tx_ant & ANT_A) && |
| (enhanced_txpower[element].chain_a_max > max_txpower_avg)) |
| max_txpower_avg = enhanced_txpower[element].chain_a_max; |
| if ((priv->cfg->valid_tx_ant & ANT_B) && |
| (enhanced_txpower[element].chain_b_max > max_txpower_avg)) |
| max_txpower_avg = enhanced_txpower[element].chain_b_max; |
| if ((priv->cfg->valid_tx_ant & ANT_C) && |
| (enhanced_txpower[element].chain_c_max > max_txpower_avg)) |
| max_txpower_avg = enhanced_txpower[element].chain_c_max; |
| if (((priv->cfg->valid_tx_ant == ANT_AB) | |
| (priv->cfg->valid_tx_ant == ANT_BC) | |
| (priv->cfg->valid_tx_ant == ANT_AC)) && |
| (enhanced_txpower[element].mimo2_max > max_txpower_avg)) |
| max_txpower_avg = enhanced_txpower[element].mimo2_max; |
| if ((priv->cfg->valid_tx_ant == ANT_ABC) && |
| (enhanced_txpower[element].mimo3_max > max_txpower_avg)) |
| max_txpower_avg = enhanced_txpower[element].mimo3_max; |
| |
| /* |
| * max. tx power in EEPROM is in 1/2 dBm format |
| * convert from 1/2 dBm to dBm (round-up convert) |
| * but we also do not want to loss 1/2 dBm resolution which |
| * will impact performance |
| */ |
| *max_txpower_in_half_dbm = max_txpower_avg; |
| return (max_txpower_avg & 0x01) + (max_txpower_avg >> 1); |
| } |
| |
| /** |
| * iwl_update_common_txpower: update channel tx power |
| * update tx power per band based on EEPROM enhanced tx power info. |
| */ |
| static s8 iwl_update_common_txpower(struct iwl_priv *priv, |
| struct iwl_eeprom_enhanced_txpwr *enhanced_txpower, |
| int section, int element, s8 *max_txpower_in_half_dbm) |
| { |
| struct iwl_channel_info *ch_info; |
| int ch; |
| bool is_ht40 = false; |
| s8 max_txpower_avg; /* (dBm) */ |
| |
| /* it is common section, contain all type (Legacy, HT and HT40) |
| * based on the element in the section to determine |
| * is it HT 40 or not |
| */ |
| if (element == EEPROM_TXPOWER_COMMON_HT40_INDEX) |
| is_ht40 = true; |
| max_txpower_avg = |
| iwl_get_max_txpower_avg(priv, enhanced_txpower, |
| element, max_txpower_in_half_dbm); |
| |
| ch_info = priv->channel_info; |
| |
| for (ch = 0; ch < priv->channel_count; ch++) { |
| /* find matching band and update tx power if needed */ |
| if ((ch_info->band == enhinfo[section].band) && |
| (ch_info->max_power_avg < max_txpower_avg) && |
| (!is_ht40)) { |
| /* Update regulatory-based run-time data */ |
| ch_info->max_power_avg = ch_info->curr_txpow = |
| max_txpower_avg; |
| ch_info->scan_power = max_txpower_avg; |
| } |
| if ((ch_info->band == enhinfo[section].band) && is_ht40 && |
| (ch_info->ht40_max_power_avg < max_txpower_avg)) { |
| /* Update regulatory-based run-time data */ |
| ch_info->ht40_max_power_avg = max_txpower_avg; |
| } |
| ch_info++; |
| } |
| return max_txpower_avg; |
| } |
| |
| /** |
| * iwl_update_channel_txpower: update channel tx power |
| * update channel tx power based on EEPROM enhanced tx power info. |
| */ |
| static s8 iwl_update_channel_txpower(struct iwl_priv *priv, |
| struct iwl_eeprom_enhanced_txpwr *enhanced_txpower, |
| int section, int element, s8 *max_txpower_in_half_dbm) |
| { |
| struct iwl_channel_info *ch_info; |
| int ch; |
| u8 channel; |
| s8 max_txpower_avg; /* (dBm) */ |
| |
| channel = enhinfo[section].iwl_eeprom_section_channel[element]; |
| max_txpower_avg = |
| iwl_get_max_txpower_avg(priv, enhanced_txpower, |
| element, max_txpower_in_half_dbm); |
| |
| ch_info = priv->channel_info; |
| for (ch = 0; ch < priv->channel_count; ch++) { |
| /* find matching channel and update tx power if needed */ |
| if (ch_info->channel == channel) { |
| if ((ch_info->max_power_avg < max_txpower_avg) && |
| (!enhinfo[section].is_ht40)) { |
| /* Update regulatory-based run-time data */ |
| ch_info->max_power_avg = max_txpower_avg; |
| ch_info->curr_txpow = max_txpower_avg; |
| ch_info->scan_power = max_txpower_avg; |
| } |
| if ((enhinfo[section].is_ht40) && |
| (ch_info->ht40_max_power_avg < max_txpower_avg)) { |
| /* Update regulatory-based run-time data */ |
| ch_info->ht40_max_power_avg = max_txpower_avg; |
| } |
| break; |
| } |
| ch_info++; |
| } |
| return max_txpower_avg; |
| } |
| |
| /** |
| * iwlcore_eeprom_enhanced_txpower: process enhanced tx power info |
| */ |
| static void iwlcore_eeprom_enhanced_txpower_old(struct iwl_priv *priv) |
| { |
| int eeprom_section_count = 0; |
| int section, element; |
| struct iwl_eeprom_enhanced_txpwr *enhanced_txpower; |
| u32 offset; |
| s8 max_txpower_avg; /* (dBm) */ |
| s8 max_txpower_in_half_dbm; /* (half-dBm) */ |
| |
| /* Loop through all the sections |
| * adjust bands and channel's max tx power |
| * Set the tx_power_user_lmt to the highest power |
| * supported by any channels and chains |
| */ |
| for (section = 0; section < ARRAY_SIZE(enhinfo); section++) { |
| eeprom_section_count = enhinfo[section].count; |
| offset = enhinfo[section].offset; |
| enhanced_txpower = (struct iwl_eeprom_enhanced_txpwr *) |
| iwl_eeprom_query_addr(priv, offset); |
| |
| /* |
| * check for valid entry - |
| * different version of EEPROM might contain different set |
| * of enhanced tx power table |
| * always check for valid entry before process |
| * the information |
| */ |
| if (!(enhanced_txpower->flags || enhanced_txpower->channel) || |
| enhanced_txpower->delta_20_in_40) |
| continue; |
| |
| for (element = 0; element < eeprom_section_count; element++) { |
| if (enhinfo[section].is_common) |
| max_txpower_avg = |
| iwl_update_common_txpower(priv, |
| enhanced_txpower, section, |
| element, |
| &max_txpower_in_half_dbm); |
| else |
| max_txpower_avg = |
| iwl_update_channel_txpower(priv, |
| enhanced_txpower, section, |
| element, |
| &max_txpower_in_half_dbm); |
| |
| /* Update the tx_power_user_lmt to the highest power |
| * supported by any channel */ |
| if (max_txpower_avg > priv->tx_power_user_lmt) |
| priv->tx_power_user_lmt = max_txpower_avg; |
| |
| /* |
| * Update the tx_power_lmt_in_half_dbm to |
| * the highest power supported by any channel |
| */ |
| if (max_txpower_in_half_dbm > |
| priv->tx_power_lmt_in_half_dbm) |
| priv->tx_power_lmt_in_half_dbm = |
| max_txpower_in_half_dbm; |
| } |
| } |
| } |
| |
| static void |
| iwlcore_eeprom_enh_txp_read_element(struct iwl_priv *priv, |
| struct iwl_eeprom_enhanced_txpwr *txp, |
| s8 max_txpower_avg) |
| { |
| int ch_idx; |
| bool is_ht40 = txp->flags & IWL_EEPROM_ENH_TXP_FL_40MHZ; |
| enum ieee80211_band band; |
| |
| band = txp->flags & IWL_EEPROM_ENH_TXP_FL_BAND_52G ? |
| IEEE80211_BAND_5GHZ : IEEE80211_BAND_2GHZ; |
| |
| for (ch_idx = 0; ch_idx < priv->channel_count; ch_idx++) { |
| struct iwl_channel_info *ch_info = &priv->channel_info[ch_idx]; |
| |
| /* update matching channel or from common data only */ |
| if (txp->channel != 0 && ch_info->channel != txp->channel) |
| continue; |
| |
| /* update matching band only */ |
| if (band != ch_info->band) |
| continue; |
| |
| if (ch_info->max_power_avg < max_txpower_avg && !is_ht40) { |
| ch_info->max_power_avg = max_txpower_avg; |
| ch_info->curr_txpow = max_txpower_avg; |
| ch_info->scan_power = max_txpower_avg; |
| } |
| |
| if (is_ht40 && ch_info->ht40_max_power_avg < max_txpower_avg) |
| ch_info->ht40_max_power_avg = max_txpower_avg; |
| } |
| } |
| |
| #define EEPROM_TXP_OFFS (0x00 | INDIRECT_ADDRESS | INDIRECT_TXP_LIMIT) |
| #define EEPROM_TXP_ENTRY_LEN sizeof(struct iwl_eeprom_enhanced_txpwr) |
| #define EEPROM_TXP_SZ_OFFS (0x00 | INDIRECT_ADDRESS | INDIRECT_TXP_LIMIT_SIZE) |
| |
| static void iwlcore_eeprom_enhanced_txpower_new(struct iwl_priv *priv) |
| { |
| struct iwl_eeprom_enhanced_txpwr *txp_array, *txp; |
| int idx, entries; |
| __le16 *txp_len; |
| s8 max_txp_avg, max_txp_avg_halfdbm; |
| |
| BUILD_BUG_ON(sizeof(struct iwl_eeprom_enhanced_txpwr) != 8); |
| |
| /* the length is in 16-bit words, but we want entries */ |
| txp_len = (__le16 *) iwlagn_eeprom_query_addr(priv, EEPROM_TXP_SZ_OFFS); |
| entries = le16_to_cpup(txp_len) * 2 / EEPROM_TXP_ENTRY_LEN; |
| |
| txp_array = (void *) iwlagn_eeprom_query_addr(priv, EEPROM_TXP_OFFS); |
| for (idx = 0; idx < entries; idx++) { |
| txp = &txp_array[idx]; |
| |
| /* skip invalid entries */ |
| if (!(txp->flags & IWL_EEPROM_ENH_TXP_FL_VALID)) |
| continue; |
| |
| max_txp_avg = iwl_get_max_txpower_avg(priv, txp_array, idx, |
| &max_txp_avg_halfdbm); |
| |
| /* |
| * Update the user limit values values to the highest |
| * power supported by any channel |
| */ |
| if (max_txp_avg > priv->tx_power_user_lmt) |
| priv->tx_power_user_lmt = max_txp_avg; |
| if (max_txp_avg_halfdbm > priv->tx_power_lmt_in_half_dbm) |
| priv->tx_power_lmt_in_half_dbm = max_txp_avg_halfdbm; |
| |
| iwlcore_eeprom_enh_txp_read_element(priv, txp, max_txp_avg); |
| } |
| } |
| |
| void iwlcore_eeprom_enhanced_txpower(struct iwl_priv *priv) |
| { |
| if (priv->cfg->use_new_eeprom_reading) |
| iwlcore_eeprom_enhanced_txpower_new(priv); |
| else |
| iwlcore_eeprom_enhanced_txpower_old(priv); |
| } |